Meet the robotic explorers that landed on Mars in 2004, and check out their tools and instruments.
Learn about the giants of the polar seas.
Why do teens take risks, and what do our notions of risk tell us about the dangers of growing up?
A model for heart development
Discover secret colors hidden in a black marker!
Why is your shadow longer in winter than in summer? Grab a basketball and some paperclips and find out!
The 18,000-foot Mt. Parinacota presents some fitness challenges for climbers.
Staff member Vivian Altmann presents the "Snack" Water-Bottle Membranophone." Make some noise with simple materials.
Make your own miniature "Lava Lite."
See a map of recent earthquakes in the United States, and learn why earthquakes happen so frequently on the West Coast.
Investigate actual images of the Martian surface taken by the rovers Spirit and Opportunity.
Pier 15 (Embarcadero at Green Street)San Francisco, CA 94111(415) 528-4444
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